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ABCLX addressing Individual bits in multi-level UDT's

Jason Sanders

Hi Everyone,

I'm not certain on how i would go about addressing individual bits located inside of a multi-level UDT...

On the controller, there is a UDT called PS with multiple different UDT's contained inside it. For example PS.S3.DI, where PS & S3 are UDT's and DI is a DINT. How would i address an individual BOOL within the DINT? For a PLC address of PS.S3.DI.0 would that be addressed as PS.S3.DI{0}?

How deep can you go with UDT's and addressing elements contained within them?

Thanks in advance.

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  • I've not heard of any limits on how deep you can go within a UDT, but there might be constraints in the protocol I'm not aware of, otherwise just the address field within Citect, which is 254 characters in length (hopefully one day we will move away from DBFs and unleash more space).

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  • I've not heard of any limits on how deep you can go within a UDT, but there might be constraints in the protocol I'm not aware of, otherwise just the address field within Citect, which is 254 characters in length (hopefully one day we will move away from DBFs and unleash more space).

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